Simulation and analysis of common mode voltage, bearing voltage and bearing current in two-level and three-level PWM inverter fed induction motor drive with long cable

Reddy, S. Rama; Banakara, Basavaraja

doi:10.1109/icpace.2015.7274947

Cited by 9 publications

(7 citation statements)

References 10 publications

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“…Although D2L-VSIs with two isolated dc sources do not suffer from the ZSC and CMC -similar to other kinds of inverters, shaft voltage, bearing currents -they contain capacitive bearing current (dv/dt) and electric discharge machining (EDM) currents. Thus, electromagnetic interference problems are brought by CM voltage (CMV) [24,25]. Inspired by a growing body of studies carried out to reduce or eliminate CMV in both two-level 2L [26,27] and ML inverters [28][29][30], substantial efforts have been devoted to reduce the harmful effects of CMV in D2L-VSIs.…”

Section: Introductionmentioning

confidence: 99%

Adapted near‐state PWM for dual two‐level inverters in order to reduce common‐mode voltage and switching losses

Aghazadeh

Khodabakhshi‐Javinani

Nafisi

et al. 2019

IET power electron.

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In this paper, a near-state pulse-width modulation (NSPWM) algorithm is proposed and implemented on dual-twolevel voltage-source inverters (D2L-VSIs) in order to reduce the common-mode voltage (CMV), the inverter switching losses, the current total harmonic distortion, and the side effects of bearing currents-compared with space vector modulation (SVM) and PWM7. To gain these goals, two conventional two-level inverters of the D2L-VSI are controlled, separately, with specific switching sequences and an adjusted phase difference between the carriers of two inverters. For evaluating and comparing these PWM techniques mathematically, both CMV root mean square generated and switching losses of the D2L-VSI are formulated as a function of the power factor of the D2L-VSI, which is driven by the methods detailed in this study. Eventually, theories and analysis, as well as simulations and experimental results-which are generated by MATLAB/Simulink environment and a 300 W scaled-down D2LVSI prototype, respectively-authenticate the superiority of the proposed NSPWM over both SVM and PWM7.

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Section: Introductionmentioning

confidence: 99%

Adapted near‐state PWM for dual two‐level inverters in order to reduce common‐mode voltage and switching losses

Aghazadeh

Khodabakhshi‐Javinani

Nafisi

et al. 2019

IET power electron.

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“…However, this model was not verified by experiment and the deeper research on bearing voltage need to be conducted. Moreover, the influence of cable on bearing voltage should be taken into consideration when the converter and electric machine are connected through long cables [12, 13].…”

Section: Introductionmentioning

confidence: 99%

Modelling and suppression of bearing voltage of wind turbine permanent magnet synchronous generators

Jia,

Liu,

et al. 2023

IET Electric Power Appl

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The problem of bearing current is common in wind power generation system, which leads to the attenuation of generator life and great economic losses. Bearing voltage of a 5.5 MW wind‐turbine permanent magnet synchronous generator is studied. The bearing voltage equivalent circuit is modelled by studying the internal system structure of the generator, and an extraction method of cable parameters, generator winding parameters and stray capacitance parameters based on experiments is proposed to simulate the system. A system test platform is built to test the common mode voltage, common mode current and bearing voltage, and the test results are compared with the simulation results in time domain and frequency domain. The result indicate that the common mode equivalent model can accurately simulate the actual bearing voltage. Finally, rotor flange insulation is adopted to suppress bearing voltage. The relationship between the design of rotor flange insulation with suppressing effect is discussed. Finally, an optimisation design method is presented for the proposed suppression scheme.

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“…The RLC filter at the inverter output is the most effective solution among the three topologies [9]. Simulation analysis of V cm and V b in 2-level and 3-level PWM ASD with long cable is presented in this paper the work is extended to 5-level PWM ASD [10]. This paper is organized as follows: section.…”

Section: Introductionmentioning

confidence: 99%

Modeling, Simulation and Analysis of Bearing Voltage and Bearing Current in PWM Multilevel Inverter Fed Induction Motor with Different HP Ratings

M¹,

Banakara²,

Reddy³

2017

International Journal of Innovative Research in Electrical, Ele

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Adjustable Speed Drives (ASDs) are extensively used in commercial and industrial heating, ventilation, air conditioning and refrigeration (HVAC/R) equipment's because of many advantages in control and energy savings. The ASDs use PWM inverter with high speed switching devices such as Insulated Gate Bipolar Transistors (IGBTs) generates the common mode voltage (V cm). This V cm causes the bearing voltage (V b), which leads to premature bearing failure.In some industrial applications the PWM inverters and the motors are located separately thus requiring long motor cable. Which contributes over voltage and higher V cm at the motor terminal due to the voltage reflection phenomenon. Higher the common mode voltage results in higher induced V b. This paper presents modeling, simulation and analysis of bearing current, bearing voltage in PWM multilevel inverter fed induction motor of 5HP and 10HP Motors and THD Analysis of PWM MLI fed induction motor without long cable is done. Simulation is carried out using MATLAB Simulink.

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Simulation and analysis of common mode voltage, bearing voltage and bearing current in two-level and three-level PWM inverter fed induction motor drive with long cable

Cited by 9 publications

References 10 publications

Adapted near‐state PWM for dual two‐level inverters in order to reduce common‐mode voltage and switching losses

Adapted near‐state PWM for dual two‐level inverters in order to reduce common‐mode voltage and switching losses

Modelling and suppression of bearing voltage of wind turbine permanent magnet synchronous generators

Modeling, Simulation and Analysis of Bearing Voltage and Bearing Current in PWM Multilevel Inverter Fed Induction Motor with Different HP Ratings

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